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Revelation of Ni magnetic moment in GdNi single crystal by soft X-ray magnetic circular dichroism |
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| Authors: | K. Yano I. Umehara A. Yaresko |
| Affiliation: | a C.S.T., Nihon University, Narashino-dai, Funabashi, Chiba 274-8501, Japan b Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan c Faculty of Engineering, Fukui University of Technology, Fukui 910-8507, Japan d Max-Planck-Institute, Physics of Complex System, 01187 Dresden, Germany |
| Abstract: | Magnetic moment of Ni in GdNi single crystal was studied through the soft X-ray absorption spectra (XAS) and the magnetic circular dichroism (MCD) at the Ni L2,3-edges and the Gd M4,5-edges. Our experiment revealed for the first time that the Ni 3d band is not filled completely even at the content of 50 at.% of Gd and the Ni does retain a total magnetic moment coupling antiparallel to that of Gd. This result implied that the Ni in GdNi holds an intrinsic magnetic moment even at 50 at.% of Gd and contradicts the well-known charge transfer model. Further by employing the magneto-optical sum rule, the spin and orbital angular magnetic moment were evaluated and discussed. |
| Keywords: | 75.25.+z 75.50.Cc 75.50.Gg 78.20.Ls 78.70.Dm |
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